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Gewählte Publikation:

Lim, SJ; Wan Aida, WM; Schiehser, S; Rosenau, T; Böhmdorfer, S; .
(2019): Structural elucidation of fucoidan from Cladosiphon okamuranus (Okinawa mozuku).
Food Chem. 2019; 272:222-226 FullText FullText_BOKU

Fucoidan is a sulphated polysaccharide, made up mainly of L-fucose, which is found in brown seaweeds. Its chemical structure is diverse and depends on maturity, species and geographical location. The objective of this study was to elucidate the chemical structure of fucoidan from Cladosiphon okamuranus harvested in Japan. The fucoidan was subject to purification prior to monosaccharide profiling, sulphate content determination, and linkage analysis. Our results showed that Japanese Cladosiphon okamuranus fucoidan contained 70.13 +/- 0.22 wt % fucose and 15.16 +/- 1.17 wt% sulphate. Other minor monosaccharides found were D-xylose, D-galactose, D-mannose, D-glucose, D-arabinose, D-rhamnose and D-glucuronic acid. Linkage analysis revealed that fucopyranoside units along the backbone are linked, through alpha-1,3-glycosidic bonds, with fucose branching at C-2, and one sulphate group at C-4 per every three fucose units, i.e. the structure of fucoidan from Japanese Cladosiphon okamuranus is [-> 3)-alpha-fuc(1 ->](0.52)[-> 3)-alpha-fuc-4-OSO3-(1 ->](0.33)[-> 2)-alpha-fuc](0.14).
Autor/innen der BOKU Wien:
Böhmdorfer Stefan
Rosenau Thomas
Schiehser Sonja
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Cladosiphon okamuranus
Structural elucidation
Brown seaweed
Monosaccharide analysis
Linkage analysis

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